Common-mode filter



FIG. 1 is a perspective view of a common-mode filter showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a rear view therefore.

The broken lines shown represent the portions of the common-mode filter that form no part of the claimed design. 

CLAIM The ornamental design for a common-mode filter, as shown and described. 